The 6N137, HCPL-26XX/06XX/4661, HCNW137/26X1 are
optically coupled gates that combine a GaAsP light emitting
diode and an integrated high gain photo detector.
An enable input allows the detector to be strobed. The
output of the detector IC is an open collector Schottkyclamped
transistor. The internal shield provides a guaranteed
common mode transient immunity specification
up to 15,000 V/μs at Vcm=1000V.

This unique design provides maximum ac and dc circuit isolation
while achieving TTL compatibility. The optocoupler
ac and dc operational param e ters are guaranteed from -
40°C to +85°C allowing troublefree system performance.